Glenn L. Osias, MD

Medicare activity in 2024

Official CMS public-use data for Glenn L. Osias, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Most frequent services

1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)415 services
2. Biopsy of large bowel using a flexible endoscope (45380)166 services
3. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)122 services
4. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)70 services
5. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)65 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

• High cholesterol75%
• High blood pressure73%
• Arthritis49%
• Ischemic heart disease25%
• Diabetes24%
• Anxiety22%

Hospitals where Glenn L. Osias works

Medicare's Facility Affiliation Data lists Glenn L. Osias at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• University Medical Center of Princeton at PlainsboroPlainsboro, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 310010

Practice locations

Addresses where Glenn L. Osias is enrolled with Medicare (CMS data updated October 2, 2026).

• 731 Alexander RdPrinceton, NJ 08540 (609) 924‑1422

Group practices

Medicare enrollment lists Glenn L. Osias as a member of this group (CMS data updated October 2, 2026).

• Allied Digestive Health LLC286 clinicians in the group

Specialties

• Gastroenterologyprimary
• Internal Medicinealso

Find other Gastroenterology doctors in New Jersey →

Other gastroenterologists in Princeton

Clinicians with the same Medicare primary specialty in Princeton, NJ — not a recommendation.

• Anne P. Swedlund, MD
• Amy R. Shriver, MD
• Aaron M. Bellows, MD
• Robert F. Meirowitz, MD
• Angela Merlo, MD
• Vasudha Dhar, MD
• William N. Segal, MD
• Darren Andrade, MD

All gastroenterologists in Princeton →

Other clinicians in Allied Digestive Health LLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Garen Gajian, MD
• Matthew Ronan, DO
• Geethan Sivananthan, MD
• Wayne D. Siegel, MD
• Lawrence G. Ognibene, DO
• Amita A. Kulkarni, MD

Clinician information

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians